Any of various warm-blooded vertebrate animals of the class Mammalia, including humans, characterized by a set of round soft objects known as breast, tits, jublees, knockers, puppies, bonerizers, boobs or funbags. Not so known for the fact that they are a milk-producing mammary glands for nourishing the young

A warm-blooded that feeds its young milk. All mammals have necks, any "mammal" that doesnt havea neck such as a horse or a whale isnt actually a mammal and deserves to be shot. Or in a whales case, deserves to have a cork shoved in its blow hole.